Klean Kanteen is a durable lightweight stainless steel water bottle--a safe, non-leaching, clean-tasting reusuable alternative to polluting plastics. They can also be put into the dishwasher! This lot includes 3 sizes of Klean Kanteens--40 oz, 27 oz (use with hot or cold liquids) or the smaller 18 oz container (cold only). Accessories available for purchase at Klean Kanteen website  www.Kleankanteen.com .